The efficacy of the current standard non-pharmacological treatments for complex regional pain syndrome (CRPS), a painful syndrome mostly occurring after musculoskeletal trauma, is suboptimal. It thus appears essential to examine new non-pharmacological therapeutic imagery (GMI) - a non-pharmacological approach with the highest level of evidence (level II). As suggested by the most recent clinical guideline 2, a potential solution would be to add an electrotherapeutic procedure - transcranial direct current stimulation (tDCS) - that may prove effective in modulating cortical excitability and reducing the effect of cortical reorganization on pain. Given the positive results previously obtained in patients with neuropathic pain, it is hypothesized that tDCS will prove to be an innovative add-on treatment method for CRPS patients, and help reduce pain and disability.
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Inclusion Criteria: * Adults diagnosed with CRPS type 1, based on Bruehl's diagnostic criteria for research. Exclusion Criteria: * Other painful conditions; * Central nervous system disease; * Other upper limb conditions; * Diagnosis of psychiatric condition; * Dyslexia and/or severe visual impairment; * Presence of contraindication of tDCS (brain implant, history of severe cranial trauma, severe or frequent headaches, chronic skin conditions); * Sympathetic blocks for less than one month; * Pregnancy.